The OSS Knuckle Knife was made from the blade of an 1873 Springfield socket bayonet. Manufactured by Foster Bros. & Chatillon Co.*, the knuckle bow was stamped from steel strap and the handle is made from a ridged hose. This item may have been issued to Naval boarding parties in 1922. Also believed to be issued by the OSS to irregular troops in the Philippines. "United States Military Knife Collector's Guide"-Silvey-Boyd P. 124 fig.123 This example is 14 inches overall